131111201221120 has 40 divisors (see below), whose sum is σ = 314359591058964. Its totient is φ = 52444480487424.

The previous prime is 131111201221081. The next prime is 131111201221129. The reversal of 131111201221120 is 21122102111131.

It can be written as a sum of positive squares in 2 ways, for example, as 119190146795776 + 11921054425344 = 10917424^2 + 3452688^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (131111201221129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25607653929 + ... + 25607659048.

Almost surely, 2^{131111201221120} is an apocalyptic number.

131111201221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131111201221120 is an abundant number, since it is smaller than the sum of its proper divisors (183248389837844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131111201221120 is an frugal number, since it uses more digits than its factorization.

131111201221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51215313000 (or 51215312984 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 131111201221120 its reverse (21122102111131), we get a palindrome (152233303332251).

The spelling of 131111201221120 in words is "one hundred thirty-one trillion, one hundred eleven billion, two hundred one million, two hundred twenty-one thousand, one hundred twenty".